Case Study

Based on the concept of falsifiability, explain how the medium's explanation mirrors the psychic ESP example discussed in the text. Focus on how the logic of this defense affects the scientific testability of the medium's abilities.

Case context: A researcher wants to study a medium who claims to communicate with the deceased. During a controlled laboratory test with strict observation, the medium fails to produce any accurate information. The medium explains that the skeptical energy of the observing scientists interfered with the spirits, causing the communication to fail. The medium asserts that under normal, unmonitored conditions, their abilities are perfectly intact.

Question: Based on the concept of falsifiability, explain how the medium's explanation mirrors the psychic ESP example discussed in the text. Focus on how the logic of this defense affects the scientific testability of the medium's abilities.

Sample answer: The medium's explanation mirrors the ESP example by claiming that their abilities vanish specifically when closely monitored or tested by observers. By blaming the failure on the presence of observers (or their 'skeptical energy'), the medium ensures that a null result (failing to perform better than chance) is never accepted as evidence against their claim. This renders the claim unfalsifiable and impossible to evaluate scientifically, just like the ESP claim.

Key points:

  • The medium claims abilities vanish under observation/testing, mirroring the ESP claim.
  • Failure is blamed on the observers/skeptical energy instead of indicating a lack of ability.
  • This logic prevents any experimental outcome from counting as evidence against the claim, making it unfalsifiable.

Rubric: Answers must draw the parallel between the medium's excuse and the ESP example (abilities vanishing under observation), and explain how blaming observers eliminates any possible disconfirming experimental outcome, making the claim untestable.

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Updated 2026-05-27

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Research Methods in Psychology - 4th American Edition @ KPU

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